//  Copyright 2009-2010 Aurora Feint, Inc.
// 
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//  
//  	http://www.apache.org/licenses/LICENSE-2.0
//  	
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.

#pragma once

#include "OFResourceNameMap.h"

@protocol OFProviderProtocol;

@interface OFPoller : NSObject<OFCallbackable>
{
@private
	NSObject<OFProviderProtocol>* mProvider;
	OFResourceNameMap mRegisteredResources;
	NSMutableDictionary* mChronologicalResourceTypes;
	NSTimer* mHeartbeat;
	bool mInPoll;
	bool mQueuedPoll;
	
	NSString* mSourceUrl;
}

- (id)initWithProvider:(NSObject<OFProviderProtocol>*)provider sourceUrl:(NSString*)sourceUrl;

- (Class)getRegisteredResourceClassWithName:(NSString*)resourceName;
- (void)registerResourceClass:(Class)resourceClassType;
- (void)clearCacheForResourceClass:(Class)resourceClassType;
- (void)clearCacheAndForceLastSeenId:(long long)lastSeenId forResourceClass:(Class)resourceClassType;

- (void)pollNow;

- (void)resetToDefaultPollingFrequency;
- (void)changePollingFrequency:(NSTimeInterval)pollingFrequency;
- (void)stopPolling;
- (NSTimeInterval)getPollingFrequency;

- (bool)canReceiveCallbacksNow;

@end


extern NSString* OFPollerNotificationKeyForResources;
